/**
 * @license
 * Copyright 2018 Google Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

'use strict';

const del = require('del');
const mkdirp = require('mkdirp');
const path = require('path');

const {TEST_DIR_RELATIVE_PATH} = require('../lib/constants');

class CleanCommand {
  /**
   * @return {!Promise<number|undefined>} Process exit code. If no exit code is returned, `0` is assumed.
   */
  async runAsync() {
    const relativePathPatterns = ['out', '**/index.html'].map((filename) => {
      return path.join(TEST_DIR_RELATIVE_PATH, filename);
    });
    await del(relativePathPatterns);
    mkdirp.sync(path.join(TEST_DIR_RELATIVE_PATH, 'out'));
  }
}

module.exports = CleanCommand;
